980111010101 has 4 divisors (see below), whose sum is σ = 980129216652. Its totient is φ = 980092803552.

The previous prime is 980111010097. The next prime is 980111010139. The reversal of 980111010101 is 101010111089.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 446150523025 + 533960487076 = 667945^2 + 730726^2 .

It is a cyclic number.

It is not a de Polignac number, because 980111010101 - 2² = 980111010097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980111040101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9022286 + ... + 9130271.

It is an arithmetic number, because the mean of its divisors is an integer number (245032304163).

Almost surely, 2^980111010101 is an apocalyptic number.

It is an amenable number.

980111010101 is a deficient number, since it is larger than the sum of its proper divisors (18206551).

980111010101 is a wasteful number, since it uses less digits than its factorization.

980111010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18206550.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 980111010101 in words is "nine hundred eighty billion, one hundred eleven million, ten thousand, one hundred one".